Beware of the new Scam on Facebook. If you got a Facebook message with any of the following messages, Do not click on that links.
Hey claim your @ fb email address b4 its 2 late! [BITLY LINK]
OMG! claim your facebook email address now b4 its too LATE! [Google SHORTENED LINK]
This will open a Facebook app page, ask you to click on a button to confirm that you are above 18 and then complete a survey.
Facebook App Page and Links are disabled now, but you can expect this with some other url shortner and some other Facebook app page.